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Tris (77-86-1) + Acetic Acid as the buffer solution

The concentration of tris(77-86-1)/ citric acid in the buffer solution, sample medium, separation voltage, and injection were investigated by using the four β2-agonists in the feed. Effect of Time and Voltage on Separation Effect. 

Under the optimal conditions, four kinds of β2-agonists were successfully enriched and separated. The sensitivity of the method was nearly 40-fold, and the detection limit of the four β2-agonists reached 0.02 mg / L (S / N = 3) and the linear range was 0.1-15 mg /L. The method was applied to the detection of β2-agonist in pig feed samples, and satisfactory results were obtained. 

Combines capillary electrophoresis with non-contact conductivity detection with 12 mM histidine (His) +3 mM HIBA + 0.4 mM 18-crown-6 (with 10% v / v acetic acid to adjust the pH of the solution 3.5) as the buffer, the successful detection of five commonly used metal ions (K +, Na +, Sr2 + Mg2 +, Ca2 +) separation detection. Under the optimal conditions, five metal ions (especially Na + and Sr2 + with very close migration rates) can be rapidly separated within 6 min. The method was applied to the analysis of metal ion content in six kinds of mineral water, and satisfactory results were obtained. 

Utilizes CE-C4D technology to achieve good baseline separation of the three sulfonamides under the conditions of 15 mM Tris (77-86-1) + Acetic Acid (pH 8.0) as the buffer solution. Under the optimal conditions, the linear range of the three sulfonamides was 0.01 - 30 mg /L, and the detection limit was 0.005 - 0.02 mg /L (S / N = 3). The method was applied to the detection of sulfonamides in milk samples, and the results were satisfactory, which provided the possibility for the detection of sulfonamides in vivo.



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